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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | AUTHORS | COLOPHON |
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IBV_CREATE_WQ(3) Libibverbs Programmer's Manual IBV_CREATE_WQ(3)
ibv_create_wq, ibv_destroy_wq - create or destroy a Work Queue
(WQ).
#include <infiniband/verbs.h>
struct ibv_wq *ibv_create_wq(struct ibv_context *context,
struct ibv_wq_init_attr *wq_init_attr);
int ibv_destroy_wq(struct ibv_wq *wq);
ibv_create_wq() creates a WQ associated with the ibv_context
context. The argument wq_init_attr is an ibv_wq_init_attr
struct, as defined in <infiniband/verbs.h>.
struct ibv_wq_init_attr {
void *wq_context; /* Associated context of the WQ */
enum ibv_wq_type wq_type; /* WQ type */
uint32_t max_wr; /* Requested max number of outstanding WRs in the WQ */
uint32_t max_sge; /* Requested max number of scatter/gather (s/g) elements per WR in the WQ */
struct ibv_pd *pd; /* PD to be associated with the WQ */
struct ibv_cq *cq; /* CQ to be associated with the WQ */
uint32_t comp_mask; /* Identifies valid fields. Use ibv_wq_init_attr_mask */
uint32_t create_flags /* Creation flags for this WQ, use enum ibv_wq_flags */
};
enum ibv_wq_flags {
IBV_WQ_FLAGS_CVLAN_STRIPPING = 1 << 0, /* CVLAN field will be stripped from incoming packets */
IBV_WQ_FLAGS_SCATTER_FCS = 1 << 1, /* FCS field will be scattered to host memory */
IBV_WQ_FLAGS_DELAY_DROP = 1 << 2, /* Packets won't be dropped immediately if no receive WQEs */
IBV_WQ_FLAGS_PCI_WRITE_END_PADDING = 1 << 3, /* Incoming packets will be padded to cacheline size */
IBV_WQ_FLAGS_RESERVED = 1 << 4,
};
The function ibv_create_wq() will update the wq_init_attr->max_wr
and wq_init_attr->max_sge fields with the actual WQ values of the
WQ that was created; the values will be greater than or equal to
the values requested.
ibv_destroy_wq() destroys the WQ wq.
ibv_create_wq() returns a pointer to the created WQ, or NULL if
the request fails.
ibv_destroy_wq() returns 0 on success, or the value of errno on
failure (which indicates the failure reason).
ibv_modify_wq(3),
Yishai Hadas <[email protected]>
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
[email protected]. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2024-06-14. (At
that time, the date of the most recent commit that was found in
the repository was 2024-06-10.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
libibverbs 2016-07-27 IBV_CREATE_WQ(3)
Pages that refer to this page: ibv_create_rwq_ind_table(3), ibv_modify_wq(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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